./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash abf153d7504404447837d5448d411c139d9bf5ab64e9e6700e63ddfa19d4209f --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:58:21,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:58:21,393 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:58:21,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:58:21,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:58:21,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:58:21,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:58:21,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:58:21,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:58:21,423 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:58:21,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:58:21,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:58:21,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:58:21,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:58:21,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:58:21,425 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:58:21,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:58:21,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:58:21,426 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abf153d7504404447837d5448d411c139d9bf5ab64e9e6700e63ddfa19d4209f [2025-03-08 06:58:21,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:58:21,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:58:21,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:58:21,743 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:58:21,743 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:58:21,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c [2025-03-08 06:58:22,950 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c33135b5/3d375c6a65494019a32806fcfd02a168/FLAGb854149c7 [2025-03-08 06:58:23,463 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:58:23,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c [2025-03-08 06:58:23,513 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c33135b5/3d375c6a65494019a32806fcfd02a168/FLAGb854149c7 [2025-03-08 06:58:23,536 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c33135b5/3d375c6a65494019a32806fcfd02a168 [2025-03-08 06:58:23,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:58:23,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:58:23,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:58:23,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:58:23,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:58:23,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:58:23" (1/1) ... [2025-03-08 06:58:23,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf0269b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:23, skipping insertion in model container [2025-03-08 06:58:23,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:58:23" (1/1) ... [2025-03-08 06:58:23,702 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:58:24,833 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c[375709,375722] [2025-03-08 06:58:24,859 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c[383339,383352] [2025-03-08 06:58:25,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:58:25,024 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:58:25,597 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c[375709,375722] [2025-03-08 06:58:25,605 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c[383339,383352] [2025-03-08 06:58:25,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:58:25,658 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:58:25,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25 WrapperNode [2025-03-08 06:58:25,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:58:25,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:58:25,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:58:25,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:58:25,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:25,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,007 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12615 [2025-03-08 06:58:26,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:58:26,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:58:26,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:58:26,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:58:26,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,214 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 06:58:26,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,380 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:58:26,474 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:58:26,474 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:58:26,474 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:58:26,475 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (1/1) ... [2025-03-08 06:58:26,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:58:26,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:26,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:58:26,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:58:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:58:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 06:58:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 06:58:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 06:58:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 06:58:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 06:58:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 06:58:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 06:58:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 06:58:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 06:58:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 06:58:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:58:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 06:58:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 06:58:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:58:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:58:26,596 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:58:26,597 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:58:32,601 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 06:58:32,602 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 06:58:32,602 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 06:58:32,602 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 06:58:32,603 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 06:58:32,603 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 06:58:32,603 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 06:58:33,076 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2025-03-08 06:58:33,077 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:58:33,157 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:58:33,157 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:58:33,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:58:33 BoogieIcfgContainer [2025-03-08 06:58:33,158 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:58:33,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:58:33,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:58:33,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:58:33,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:58:23" (1/3) ... [2025-03-08 06:58:33,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2864037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:58:33, skipping insertion in model container [2025-03-08 06:58:33,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:58:25" (2/3) ... [2025-03-08 06:58:33,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2864037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:58:33, skipping insertion in model container [2025-03-08 06:58:33,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:58:33" (3/3) ... [2025-03-08 06:58:33,167 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.02.cil-1.c [2025-03-08 06:58:33,181 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:58:33,182 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label48+token_ring.02.cil-1.c that has 7 procedures, 2313 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-03-08 06:58:33,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:58:33,280 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7725e417, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:58:33,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 06:58:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 2313 states, 2289 states have (on average 1.854521625163827) internal successors, (4245), 2291 states have internal predecessors, (4245), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 06:58:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 06:58:33,297 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:33,298 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:33,298 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:33,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash 388348286, now seen corresponding path program 1 times [2025-03-08 06:58:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:33,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718993532] [2025-03-08 06:58:33,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:33,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 06:58:33,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 06:58:33,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:33,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:58:33,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:33,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718993532] [2025-03-08 06:58:33,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718993532] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:33,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:58:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:58:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431715837] [2025-03-08 06:58:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:33,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:58:33,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:33,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:58:33,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:58:33,668 INFO L87 Difference]: Start difference. First operand has 2313 states, 2289 states have (on average 1.854521625163827) internal successors, (4245), 2291 states have internal predecessors, (4245), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:34,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:34,013 INFO L93 Difference]: Finished difference Result 4620 states and 8549 transitions. [2025-03-08 06:58:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:58:34,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-03-08 06:58:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:34,040 INFO L225 Difference]: With dead ends: 4620 [2025-03-08 06:58:34,042 INFO L226 Difference]: Without dead ends: 2252 [2025-03-08 06:58:34,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:34,054 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4246 mSDsluCounter, 8253 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 12407 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:34,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 12407 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:58:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2025-03-08 06:58:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 2246. [2025-03-08 06:58:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2222 states have (on average 1.848784878487849) internal successors, (4108), 2224 states have internal predecessors, (4108), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 06:58:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 4140 transitions. [2025-03-08 06:58:34,175 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 4140 transitions. Word has length 66 [2025-03-08 06:58:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:34,175 INFO L471 AbstractCegarLoop]: Abstraction has 2246 states and 4140 transitions. [2025-03-08 06:58:34,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 4140 transitions. [2025-03-08 06:58:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 06:58:34,177 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:34,177 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:34,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:58:34,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:34,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:34,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1157518301, now seen corresponding path program 1 times [2025-03-08 06:58:34,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:34,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749194520] [2025-03-08 06:58:34,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:34,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:34,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 06:58:34,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 06:58:34,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:34,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:58:34,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:34,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749194520] [2025-03-08 06:58:34,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749194520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:34,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:58:34,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:58:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732994299] [2025-03-08 06:58:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:34,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:58:34,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:34,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:58:34,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:34,367 INFO L87 Difference]: Start difference. First operand 2246 states and 4140 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:34,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:34,797 INFO L93 Difference]: Finished difference Result 2490 states and 4506 transitions. [2025-03-08 06:58:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:58:34,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-03-08 06:58:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:34,806 INFO L225 Difference]: With dead ends: 2490 [2025-03-08 06:58:34,806 INFO L226 Difference]: Without dead ends: 2375 [2025-03-08 06:58:34,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:58:34,808 INFO L435 NwaCegarLoop]: 4180 mSDtfsCounter, 4239 mSDsluCounter, 12529 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 16709 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:34,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4249 Valid, 16709 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:58:34,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2025-03-08 06:58:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2363. [2025-03-08 06:58:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2318 states have (on average 1.8339085418464194) internal successors, (4251), 2322 states have internal predecessors, (4251), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (36), 30 states have call predecessors, (36), 29 states have call successors, (36) [2025-03-08 06:58:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 4316 transitions. [2025-03-08 06:58:34,860 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 4316 transitions. Word has length 66 [2025-03-08 06:58:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:34,860 INFO L471 AbstractCegarLoop]: Abstraction has 2363 states and 4316 transitions. [2025-03-08 06:58:34,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 4316 transitions. [2025-03-08 06:58:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 06:58:34,862 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:34,862 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:34,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:58:34,863 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:34,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:34,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2004258402, now seen corresponding path program 1 times [2025-03-08 06:58:34,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:34,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437993682] [2025-03-08 06:58:34,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:34,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:34,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 06:58:34,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 06:58:34,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:34,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:58:34,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:34,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437993682] [2025-03-08 06:58:34,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437993682] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:34,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:58:34,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:58:34,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576184820] [2025-03-08 06:58:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:34,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:58:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:34,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:58:34,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:34,977 INFO L87 Difference]: Start difference. First operand 2363 states and 4316 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:35,368 INFO L93 Difference]: Finished difference Result 2865 states and 5064 transitions. [2025-03-08 06:58:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:58:35,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-03-08 06:58:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:35,380 INFO L225 Difference]: With dead ends: 2865 [2025-03-08 06:58:35,381 INFO L226 Difference]: Without dead ends: 2635 [2025-03-08 06:58:35,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:58:35,383 INFO L435 NwaCegarLoop]: 4155 mSDtfsCounter, 4310 mSDsluCounter, 12464 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 16619 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:35,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4323 Valid, 16619 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:58:35,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2025-03-08 06:58:35,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2577. [2025-03-08 06:58:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2496 states have (on average 1.8084935897435896) internal successors, (4514), 2504 states have internal predecessors, (4514), 49 states have call successors, (49), 24 states have call predecessors, (49), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-03-08 06:58:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4635 transitions. [2025-03-08 06:58:35,453 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4635 transitions. Word has length 66 [2025-03-08 06:58:35,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:35,453 INFO L471 AbstractCegarLoop]: Abstraction has 2577 states and 4635 transitions. [2025-03-08 06:58:35,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4635 transitions. [2025-03-08 06:58:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 06:58:35,455 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:35,455 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:35,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:58:35,456 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:35,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2050168765, now seen corresponding path program 1 times [2025-03-08 06:58:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:35,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551992844] [2025-03-08 06:58:35,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:35,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 06:58:35,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 06:58:35,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:35,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:58:35,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:35,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551992844] [2025-03-08 06:58:35,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551992844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:35,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:58:35,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:58:35,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060679510] [2025-03-08 06:58:35,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:35,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:58:35,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:35,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:58:35,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:58:35,552 INFO L87 Difference]: Start difference. First operand 2577 states and 4635 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:35,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:35,740 INFO L93 Difference]: Finished difference Result 3050 states and 5357 transitions. [2025-03-08 06:58:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:58:35,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-03-08 06:58:35,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:35,750 INFO L225 Difference]: With dead ends: 3050 [2025-03-08 06:58:35,750 INFO L226 Difference]: Without dead ends: 2604 [2025-03-08 06:58:35,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:35,753 INFO L435 NwaCegarLoop]: 4080 mSDtfsCounter, 4172 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4182 SdHoareTripleChecker+Valid, 12184 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:35,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4182 Valid, 12184 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:58:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2025-03-08 06:58:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2577. [2025-03-08 06:58:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2496 states have (on average 1.8064903846153846) internal successors, (4509), 2504 states have internal predecessors, (4509), 49 states have call successors, (49), 24 states have call predecessors, (49), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-03-08 06:58:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4630 transitions. [2025-03-08 06:58:35,816 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4630 transitions. Word has length 66 [2025-03-08 06:58:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:35,816 INFO L471 AbstractCegarLoop]: Abstraction has 2577 states and 4630 transitions. [2025-03-08 06:58:35,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4630 transitions. [2025-03-08 06:58:35,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 06:58:35,817 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:35,817 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:35,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:58:35,817 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:35,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:35,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2042409406, now seen corresponding path program 1 times [2025-03-08 06:58:35,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:35,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223887510] [2025-03-08 06:58:35,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:35,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:35,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 06:58:35,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 06:58:35,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:35,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:58:35,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:35,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223887510] [2025-03-08 06:58:35,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223887510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:35,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:58:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:58:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681620277] [2025-03-08 06:58:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:35,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:58:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:35,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:58:35,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:35,894 INFO L87 Difference]: Start difference. First operand 2577 states and 4630 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:36,264 INFO L93 Difference]: Finished difference Result 3493 states and 5993 transitions. [2025-03-08 06:58:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:58:36,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-03-08 06:58:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:36,280 INFO L225 Difference]: With dead ends: 3493 [2025-03-08 06:58:36,280 INFO L226 Difference]: Without dead ends: 3049 [2025-03-08 06:58:36,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:58:36,284 INFO L435 NwaCegarLoop]: 4147 mSDtfsCounter, 4237 mSDsluCounter, 12429 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4250 SdHoareTripleChecker+Valid, 16576 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:36,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4250 Valid, 16576 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:58:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2025-03-08 06:58:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3005. [2025-03-08 06:58:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3005 states, 2848 states have (on average 1.7622893258426966) internal successors, (5019), 2870 states have internal predecessors, (5019), 87 states have call successors, (87), 48 states have call predecessors, (87), 68 states have return successors, (166), 94 states have call predecessors, (166), 87 states have call successors, (166) [2025-03-08 06:58:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 5272 transitions. [2025-03-08 06:58:36,415 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 5272 transitions. Word has length 66 [2025-03-08 06:58:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:36,416 INFO L471 AbstractCegarLoop]: Abstraction has 3005 states and 5272 transitions. [2025-03-08 06:58:36,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 5272 transitions. [2025-03-08 06:58:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 06:58:36,418 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:36,418 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:36,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:58:36,418 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:36,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1282976867, now seen corresponding path program 1 times [2025-03-08 06:58:36,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:36,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242169513] [2025-03-08 06:58:36,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:36,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:36,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 06:58:36,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 06:58:36,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:36,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:58:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:36,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242169513] [2025-03-08 06:58:36,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242169513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:36,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:58:36,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:58:36,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801007138] [2025-03-08 06:58:36,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:36,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:58:36,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:36,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:58:36,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:58:36,478 INFO L87 Difference]: Start difference. First operand 3005 states and 5272 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:36,701 INFO L93 Difference]: Finished difference Result 4713 states and 7853 transitions. [2025-03-08 06:58:36,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:58:36,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-03-08 06:58:36,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:36,721 INFO L225 Difference]: With dead ends: 4713 [2025-03-08 06:58:36,721 INFO L226 Difference]: Without dead ends: 3841 [2025-03-08 06:58:36,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:58:36,729 INFO L435 NwaCegarLoop]: 4283 mSDtfsCounter, 4257 mSDsluCounter, 4224 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 8507 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:36,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 8507 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:58:36,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2025-03-08 06:58:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3833. [2025-03-08 06:58:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3527 states have (on average 1.6909554862489369) internal successors, (5964), 3577 states have internal predecessors, (5964), 168 states have call successors, (168), 96 states have call predecessors, (168), 136 states have return successors, (311), 167 states have call predecessors, (311), 168 states have call successors, (311) [2025-03-08 06:58:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 6443 transitions. [2025-03-08 06:58:36,926 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 6443 transitions. Word has length 66 [2025-03-08 06:58:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:36,926 INFO L471 AbstractCegarLoop]: Abstraction has 3833 states and 6443 transitions. [2025-03-08 06:58:36,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:58:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 6443 transitions. [2025-03-08 06:58:36,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-08 06:58:36,934 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:36,934 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:36,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:58:36,934 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:36,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash -754435088, now seen corresponding path program 1 times [2025-03-08 06:58:36,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:36,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872033883] [2025-03-08 06:58:36,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:36,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-08 06:58:36,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 06:58:36,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:36,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:58:37,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872033883] [2025-03-08 06:58:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872033883] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822626807] [2025-03-08 06:58:37,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:37,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:37,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:37,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:37,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 06:58:37,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-08 06:58:37,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 06:58:37,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:37,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:37,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:58:37,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 06:58:37,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:37,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822626807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:37,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:37,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:58:37,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728946369] [2025-03-08 06:58:37,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:37,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:37,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:37,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:37,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:37,190 INFO L87 Difference]: Start difference. First operand 3833 states and 6443 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:58:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:37,368 INFO L93 Difference]: Finished difference Result 7175 states and 11335 transitions. [2025-03-08 06:58:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 107 [2025-03-08 06:58:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:37,395 INFO L225 Difference]: With dead ends: 7175 [2025-03-08 06:58:37,395 INFO L226 Difference]: Without dead ends: 5475 [2025-03-08 06:58:37,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:37,404 INFO L435 NwaCegarLoop]: 4134 mSDtfsCounter, 4093 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4093 SdHoareTripleChecker+Valid, 4288 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:37,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4093 Valid, 4288 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2025-03-08 06:58:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 5457. [2025-03-08 06:58:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 4861 states have (on average 1.6140711787698006) internal successors, (7846), 4959 states have internal predecessors, (7846), 322 states have call successors, (322), 192 states have call predecessors, (322), 272 states have return successors, (593), 313 states have call predecessors, (593), 322 states have call successors, (593) [2025-03-08 06:58:37,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 8761 transitions. [2025-03-08 06:58:37,674 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 8761 transitions. Word has length 107 [2025-03-08 06:58:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:37,675 INFO L471 AbstractCegarLoop]: Abstraction has 5457 states and 8761 transitions. [2025-03-08 06:58:37,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:58:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 8761 transitions. [2025-03-08 06:58:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-08 06:58:37,683 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:37,683 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:37,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 06:58:37,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:37,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:37,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:37,885 INFO L85 PathProgramCache]: Analyzing trace with hash 220885034, now seen corresponding path program 1 times [2025-03-08 06:58:37,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:37,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679098387] [2025-03-08 06:58:37,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:37,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:37,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-08 06:58:37,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 06:58:37,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:37,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:58:37,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:37,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679098387] [2025-03-08 06:58:37,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679098387] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:37,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064105909] [2025-03-08 06:58:37,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:37,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:37,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:37,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:37,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 06:58:38,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-08 06:58:38,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 06:58:38,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:38,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:38,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:58:38,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 06:58:38,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:38,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064105909] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:38,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:38,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:58:38,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076602256] [2025-03-08 06:58:38,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:38,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:38,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:38,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:38,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:38,157 INFO L87 Difference]: Start difference. First operand 5457 states and 8761 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:58:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:38,486 INFO L93 Difference]: Finished difference Result 11991 states and 18259 transitions. [2025-03-08 06:58:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 107 [2025-03-08 06:58:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:38,534 INFO L225 Difference]: With dead ends: 11991 [2025-03-08 06:58:38,535 INFO L226 Difference]: Without dead ends: 8667 [2025-03-08 06:58:38,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:38,552 INFO L435 NwaCegarLoop]: 4134 mSDtfsCounter, 4099 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4099 SdHoareTripleChecker+Valid, 4288 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:38,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4099 Valid, 4288 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8667 states. [2025-03-08 06:58:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8667 to 8633. [2025-03-08 06:58:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8633 states, 7465 states have (on average 1.5402545210984595) internal successors, (11498), 7659 states have internal predecessors, (11498), 622 states have call successors, (622), 384 states have call predecessors, (622), 544 states have return successors, (1149), 597 states have call predecessors, (1149), 622 states have call successors, (1149) [2025-03-08 06:58:39,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8633 states to 8633 states and 13269 transitions. [2025-03-08 06:58:39,048 INFO L78 Accepts]: Start accepts. Automaton has 8633 states and 13269 transitions. Word has length 107 [2025-03-08 06:58:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:39,049 INFO L471 AbstractCegarLoop]: Abstraction has 8633 states and 13269 transitions. [2025-03-08 06:58:39,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:58:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 8633 states and 13269 transitions. [2025-03-08 06:58:39,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-08 06:58:39,060 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:39,060 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:39,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 06:58:39,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-08 06:58:39,265 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:39,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:39,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1711214820, now seen corresponding path program 1 times [2025-03-08 06:58:39,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:39,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886401652] [2025-03-08 06:58:39,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:39,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:39,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-08 06:58:39,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 06:58:39,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:39,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:58:39,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:39,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886401652] [2025-03-08 06:58:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886401652] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:39,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161294043] [2025-03-08 06:58:39,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:39,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:39,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:39,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:39,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 06:58:39,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-08 06:58:39,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 06:58:39,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:39,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:39,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:58:39,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 06:58:39,440 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:39,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161294043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:39,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:39,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:58:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707798203] [2025-03-08 06:58:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:39,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:39,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:39,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:39,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:39,441 INFO L87 Difference]: Start difference. First operand 8633 states and 13269 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 06:58:39,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:39,798 INFO L93 Difference]: Finished difference Result 21111 states and 31486 transitions. [2025-03-08 06:58:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:39,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2025-03-08 06:58:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:39,863 INFO L225 Difference]: With dead ends: 21111 [2025-03-08 06:58:39,864 INFO L226 Difference]: Without dead ends: 14613 [2025-03-08 06:58:39,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:39,891 INFO L435 NwaCegarLoop]: 4288 mSDtfsCounter, 151 mSDsluCounter, 4132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 8420 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:39,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 8420 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14613 states. [2025-03-08 06:58:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14613 to 14613. [2025-03-08 06:58:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14613 states, 12416 states have (on average 1.4834890463917525) internal successors, (18419), 12771 states have internal predecessors, (18419), 1143 states have call successors, (1143), 732 states have call predecessors, (1143), 1052 states have return successors, (2331), 1125 states have call predecessors, (2331), 1143 states have call successors, (2331) [2025-03-08 06:58:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14613 states to 14613 states and 21893 transitions. [2025-03-08 06:58:40,504 INFO L78 Accepts]: Start accepts. Automaton has 14613 states and 21893 transitions. Word has length 107 [2025-03-08 06:58:40,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:40,504 INFO L471 AbstractCegarLoop]: Abstraction has 14613 states and 21893 transitions. [2025-03-08 06:58:40,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 06:58:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 14613 states and 21893 transitions. [2025-03-08 06:58:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 06:58:40,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:40,538 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:40,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 06:58:40,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:40,738 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:40,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash 165017430, now seen corresponding path program 1 times [2025-03-08 06:58:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:40,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542679457] [2025-03-08 06:58:40,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:40,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:40,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 06:58:40,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 06:58:40,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:40,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-08 06:58:40,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:40,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542679457] [2025-03-08 06:58:40,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542679457] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:40,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672153949] [2025-03-08 06:58:40,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:40,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:40,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:40,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:40,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 06:58:40,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 06:58:40,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 06:58:40,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:40,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:40,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:58:40,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 06:58:41,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672153949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:41,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:41,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:58:41,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653324224] [2025-03-08 06:58:41,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:41,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:41,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:41,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:41,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:41,034 INFO L87 Difference]: Start difference. First operand 14613 states and 21893 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 06:58:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:41,596 INFO L93 Difference]: Finished difference Result 22667 states and 33973 transitions. [2025-03-08 06:58:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 155 [2025-03-08 06:58:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:41,651 INFO L225 Difference]: With dead ends: 22667 [2025-03-08 06:58:41,652 INFO L226 Difference]: Without dead ends: 13033 [2025-03-08 06:58:41,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:41,688 INFO L435 NwaCegarLoop]: 4134 mSDtfsCounter, 4090 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4090 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:41,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4090 Valid, 4168 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13033 states. [2025-03-08 06:58:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13033 to 12929. [2025-03-08 06:58:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12929 states, 11160 states have (on average 1.4585125448028673) internal successors, (16277), 11341 states have internal predecessors, (16277), 965 states have call successors, (965), 650 states have call predecessors, (965), 802 states have return successors, (1595), 947 states have call predecessors, (1595), 965 states have call successors, (1595) [2025-03-08 06:58:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12929 states to 12929 states and 18837 transitions. [2025-03-08 06:58:42,308 INFO L78 Accepts]: Start accepts. Automaton has 12929 states and 18837 transitions. Word has length 155 [2025-03-08 06:58:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:42,309 INFO L471 AbstractCegarLoop]: Abstraction has 12929 states and 18837 transitions. [2025-03-08 06:58:42,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 06:58:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 12929 states and 18837 transitions. [2025-03-08 06:58:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 06:58:42,333 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:42,333 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:42,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 06:58:42,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:42,534 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:42,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1681357431, now seen corresponding path program 1 times [2025-03-08 06:58:42,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:42,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746145814] [2025-03-08 06:58:42,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:42,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:42,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 06:58:42,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 06:58:42,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:42,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-08 06:58:42,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:42,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746145814] [2025-03-08 06:58:42,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746145814] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:42,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448290342] [2025-03-08 06:58:42,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:42,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:42,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:42,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:42,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 06:58:42,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 06:58:42,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 06:58:42,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:42,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:42,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:58:42,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-08 06:58:42,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:42,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448290342] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:42,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:42,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:58:42,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864226104] [2025-03-08 06:58:42,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:42,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:42,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:42,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:42,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:42,746 INFO L87 Difference]: Start difference. First operand 12929 states and 18837 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:58:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:43,067 INFO L93 Difference]: Finished difference Result 22326 states and 31648 transitions. [2025-03-08 06:58:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:43,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 155 [2025-03-08 06:58:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:43,115 INFO L225 Difference]: With dead ends: 22326 [2025-03-08 06:58:43,115 INFO L226 Difference]: Without dead ends: 14093 [2025-03-08 06:58:43,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:43,139 INFO L435 NwaCegarLoop]: 4177 mSDtfsCounter, 4083 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:43,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 4338 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14093 states. [2025-03-08 06:58:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14093 to 13991. [2025-03-08 06:58:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13991 states, 12142 states have (on average 1.4267007082852907) internal successors, (17323), 12323 states have internal predecessors, (17323), 979 states have call successors, (979), 716 states have call predecessors, (979), 868 states have return successors, (1675), 961 states have call predecessors, (1675), 979 states have call successors, (1675) [2025-03-08 06:58:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13991 states to 13991 states and 19977 transitions. [2025-03-08 06:58:43,661 INFO L78 Accepts]: Start accepts. Automaton has 13991 states and 19977 transitions. Word has length 155 [2025-03-08 06:58:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:43,661 INFO L471 AbstractCegarLoop]: Abstraction has 13991 states and 19977 transitions. [2025-03-08 06:58:43,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:58:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13991 states and 19977 transitions. [2025-03-08 06:58:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-08 06:58:43,686 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:43,686 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:43,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 06:58:43,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 06:58:43,887 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:43,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash -34330110, now seen corresponding path program 1 times [2025-03-08 06:58:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:43,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818964903] [2025-03-08 06:58:43,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:43,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 06:58:43,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 06:58:43,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:43,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-08 06:58:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818964903] [2025-03-08 06:58:43,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818964903] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280533471] [2025-03-08 06:58:43,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:43,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:43,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:43,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:43,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 06:58:44,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 06:58:44,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 06:58:44,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:44,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:44,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:58:44,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 06:58:44,071 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:44,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280533471] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:44,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:44,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:58:44,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146420931] [2025-03-08 06:58:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:44,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:44,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:44,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:44,072 INFO L87 Difference]: Start difference. First operand 13991 states and 19977 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:58:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:44,797 INFO L93 Difference]: Finished difference Result 37091 states and 51617 transitions. [2025-03-08 06:58:44,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:44,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 156 [2025-03-08 06:58:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:44,893 INFO L225 Difference]: With dead ends: 37091 [2025-03-08 06:58:44,893 INFO L226 Difference]: Without dead ends: 25243 [2025-03-08 06:58:44,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:44,919 INFO L435 NwaCegarLoop]: 4286 mSDtfsCounter, 138 mSDsluCounter, 4129 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 8415 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:44,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 8415 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25243 states. [2025-03-08 06:58:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25243 to 25213. [2025-03-08 06:58:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25213 states, 21602 states have (on average 1.375104157022498) internal successors, (29705), 21963 states have internal predecessors, (29705), 1901 states have call successors, (1901), 1404 states have call predecessors, (1901), 1708 states have return successors, (3703), 1865 states have call predecessors, (3703), 1901 states have call successors, (3703) [2025-03-08 06:58:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25213 states to 25213 states and 35309 transitions. [2025-03-08 06:58:46,018 INFO L78 Accepts]: Start accepts. Automaton has 25213 states and 35309 transitions. Word has length 156 [2025-03-08 06:58:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:46,019 INFO L471 AbstractCegarLoop]: Abstraction has 25213 states and 35309 transitions. [2025-03-08 06:58:46,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:58:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 25213 states and 35309 transitions. [2025-03-08 06:58:46,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-08 06:58:46,061 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:46,061 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:46,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 06:58:46,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:46,262 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:46,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2137597364, now seen corresponding path program 1 times [2025-03-08 06:58:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:46,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338805005] [2025-03-08 06:58:46,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:46,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:46,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 06:58:46,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 06:58:46,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:46,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-08 06:58:46,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:46,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338805005] [2025-03-08 06:58:46,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338805005] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:46,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543425065] [2025-03-08 06:58:46,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:46,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:46,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:46,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:46,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 06:58:46,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 06:58:46,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 06:58:46,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:46,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:46,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:58:46,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-08 06:58:46,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:46,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543425065] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:46,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:46,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:58:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960706298] [2025-03-08 06:58:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:46,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:46,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:46,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:46,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:46,580 INFO L87 Difference]: Start difference. First operand 25213 states and 35309 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 06:58:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:47,463 INFO L93 Difference]: Finished difference Result 39485 states and 55745 transitions. [2025-03-08 06:58:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:47,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 156 [2025-03-08 06:58:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:47,544 INFO L225 Difference]: With dead ends: 39485 [2025-03-08 06:58:47,545 INFO L226 Difference]: Without dead ends: 21339 [2025-03-08 06:58:47,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:47,585 INFO L435 NwaCegarLoop]: 4128 mSDtfsCounter, 4067 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:47,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4067 Valid, 4161 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21339 states. [2025-03-08 06:58:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21339 to 21271. [2025-03-08 06:58:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21271 states, 18392 states have (on average 1.3534688995215312) internal successors, (24893), 18575 states have internal predecessors, (24893), 1565 states have call successors, (1565), 1176 states have call predecessors, (1565), 1312 states have return successors, (2699), 1531 states have call predecessors, (2699), 1565 states have call successors, (2699) [2025-03-08 06:58:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21271 states to 21271 states and 29157 transitions. [2025-03-08 06:58:48,350 INFO L78 Accepts]: Start accepts. Automaton has 21271 states and 29157 transitions. Word has length 156 [2025-03-08 06:58:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:48,350 INFO L471 AbstractCegarLoop]: Abstraction has 21271 states and 29157 transitions. [2025-03-08 06:58:48,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 06:58:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 21271 states and 29157 transitions. [2025-03-08 06:58:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 06:58:48,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:48,368 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:48,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 06:58:48,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:48,570 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:48,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1935489075, now seen corresponding path program 1 times [2025-03-08 06:58:48,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:48,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654205657] [2025-03-08 06:58:48,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:48,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:48,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:58:48,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:58:48,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:48,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-08 06:58:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654205657] [2025-03-08 06:58:48,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654205657] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119467193] [2025-03-08 06:58:48,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:48,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:48,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:48,666 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:48,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 06:58:48,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:58:48,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:58:48,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:48,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:48,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:58:48,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 06:58:48,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119467193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:58:48,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287786999] [2025-03-08 06:58:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:48,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:48,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:48,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:48,834 INFO L87 Difference]: Start difference. First operand 21271 states and 29157 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:58:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:49,598 INFO L93 Difference]: Finished difference Result 41667 states and 56860 transitions. [2025-03-08 06:58:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:49,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 157 [2025-03-08 06:58:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:49,693 INFO L225 Difference]: With dead ends: 41667 [2025-03-08 06:58:49,693 INFO L226 Difference]: Without dead ends: 22551 [2025-03-08 06:58:49,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:49,742 INFO L435 NwaCegarLoop]: 4133 mSDtfsCounter, 4091 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4091 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:49,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4091 Valid, 4165 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22551 states. [2025-03-08 06:58:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22551 to 21271. [2025-03-08 06:58:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21271 states, 18392 states have (on average 1.3273705959112658) internal successors, (24413), 18575 states have internal predecessors, (24413), 1565 states have call successors, (1565), 1176 states have call predecessors, (1565), 1312 states have return successors, (2573), 1531 states have call predecessors, (2573), 1565 states have call successors, (2573) [2025-03-08 06:58:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21271 states to 21271 states and 28551 transitions. [2025-03-08 06:58:50,552 INFO L78 Accepts]: Start accepts. Automaton has 21271 states and 28551 transitions. Word has length 157 [2025-03-08 06:58:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:50,553 INFO L471 AbstractCegarLoop]: Abstraction has 21271 states and 28551 transitions. [2025-03-08 06:58:50,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:58:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 21271 states and 28551 transitions. [2025-03-08 06:58:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 06:58:50,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:50,571 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:50,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 06:58:50,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 06:58:50,776 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:50,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash 244197769, now seen corresponding path program 1 times [2025-03-08 06:58:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:50,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493523932] [2025-03-08 06:58:50,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:50,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:58:50,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:58:50,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:50,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-03-08 06:58:50,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:50,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493523932] [2025-03-08 06:58:50,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493523932] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:50,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224475807] [2025-03-08 06:58:50,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:50,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:50,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:50,861 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:50,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 06:58:50,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:58:50,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:58:50,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:50,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:50,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:58:50,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 06:58:50,958 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224475807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:50,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:50,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:58:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984490378] [2025-03-08 06:58:50,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:50,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:50,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:50,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:50,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:50,961 INFO L87 Difference]: Start difference. First operand 21271 states and 28551 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:58:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:51,964 INFO L93 Difference]: Finished difference Result 57181 states and 75479 transitions. [2025-03-08 06:58:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:51,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 157 [2025-03-08 06:58:51,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:52,089 INFO L225 Difference]: With dead ends: 57181 [2025-03-08 06:58:52,090 INFO L226 Difference]: Without dead ends: 38065 [2025-03-08 06:58:52,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:52,309 INFO L435 NwaCegarLoop]: 4275 mSDtfsCounter, 141 mSDsluCounter, 4122 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 8397 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:52,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 8397 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38065 states. [2025-03-08 06:58:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38065 to 38063. [2025-03-08 06:58:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38063 states, 32532 states have (on average 1.2834439936062954) internal successors, (41753), 32897 states have internal predecessors, (41753), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-03-08 06:58:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38063 states to 38063 states and 50467 transitions. [2025-03-08 06:58:54,455 INFO L78 Accepts]: Start accepts. Automaton has 38063 states and 50467 transitions. Word has length 157 [2025-03-08 06:58:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:54,455 INFO L471 AbstractCegarLoop]: Abstraction has 38063 states and 50467 transitions. [2025-03-08 06:58:54,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:58:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 38063 states and 50467 transitions. [2025-03-08 06:58:54,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 06:58:54,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:54,523 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:54,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-08 06:58:54,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 06:58:54,724 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:54,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:54,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1276422527, now seen corresponding path program 1 times [2025-03-08 06:58:54,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:54,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510301039] [2025-03-08 06:58:54,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:54,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:54,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:58:54,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:58:54,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:54,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-08 06:58:54,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:54,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510301039] [2025-03-08 06:58:54,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510301039] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:58:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131924257] [2025-03-08 06:58:54,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:54,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:58:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:58:54,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:58:54,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 06:58:54,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:58:54,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:58:54,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:54,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:54,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:58:54,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:58:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-08 06:58:54,950 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:58:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131924257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:54,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:58:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:58:54,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943309782] [2025-03-08 06:58:54,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:54,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:54,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:54,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:54,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:54,951 INFO L87 Difference]: Start difference. First operand 38063 states and 50467 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:58:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:58:56,233 INFO L93 Difference]: Finished difference Result 68173 states and 89609 transitions. [2025-03-08 06:58:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:58:56,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2025-03-08 06:58:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:58:56,342 INFO L225 Difference]: With dead ends: 68173 [2025-03-08 06:58:56,342 INFO L226 Difference]: Without dead ends: 38685 [2025-03-08 06:58:56,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:58:56,382 INFO L435 NwaCegarLoop]: 4151 mSDtfsCounter, 4086 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:58:56,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4305 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:58:56,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38685 states. [2025-03-08 06:58:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38685 to 37979. [2025-03-08 06:58:58,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37979 states, 32448 states have (on average 1.275117110453649) internal successors, (41375), 32813 states have internal predecessors, (41375), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-03-08 06:58:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37979 states to 37979 states and 50089 transitions. [2025-03-08 06:58:58,487 INFO L78 Accepts]: Start accepts. Automaton has 37979 states and 50089 transitions. Word has length 157 [2025-03-08 06:58:58,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:58:58,487 INFO L471 AbstractCegarLoop]: Abstraction has 37979 states and 50089 transitions. [2025-03-08 06:58:58,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:58:58,487 INFO L276 IsEmpty]: Start isEmpty. Operand 37979 states and 50089 transitions. [2025-03-08 06:58:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 06:58:58,518 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:58:58,518 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:58:58,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 06:58:58,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 06:58:58,719 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:58:58,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:58:58,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1551892446, now seen corresponding path program 1 times [2025-03-08 06:58:58,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:58:58,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662399668] [2025-03-08 06:58:58,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:58:58,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:58:58,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:58:58,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:58:58,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:58:58,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:58:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-08 06:58:58,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:58:58,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662399668] [2025-03-08 06:58:58,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662399668] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:58:58,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:58:58,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:58:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124644636] [2025-03-08 06:58:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:58:58,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:58:58,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:58:58,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:58:58,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:58:58,774 INFO L87 Difference]: Start difference. First operand 37979 states and 50089 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 06:59:00,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:59:00,216 INFO L93 Difference]: Finished difference Result 67391 states and 87790 transitions. [2025-03-08 06:59:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:59:00,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 157 [2025-03-08 06:59:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:59:00,332 INFO L225 Difference]: With dead ends: 67391 [2025-03-08 06:59:00,332 INFO L226 Difference]: Without dead ends: 31559 [2025-03-08 06:59:00,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:59:00,413 INFO L435 NwaCegarLoop]: 4128 mSDtfsCounter, 165 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 8086 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:59:00,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 8086 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:59:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31559 states. [2025-03-08 06:59:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31559 to 31559. [2025-03-08 06:59:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31559 states, 27064 states have (on average 1.2866169080697605) internal successors, (34821), 27353 states have internal predecessors, (34821), 2445 states have call successors, (2445), 1832 states have call predecessors, (2445), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-03-08 06:59:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31559 states to 31559 states and 41715 transitions. [2025-03-08 06:59:01,876 INFO L78 Accepts]: Start accepts. Automaton has 31559 states and 41715 transitions. Word has length 157 [2025-03-08 06:59:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:59:01,877 INFO L471 AbstractCegarLoop]: Abstraction has 31559 states and 41715 transitions. [2025-03-08 06:59:01,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 06:59:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 31559 states and 41715 transitions. [2025-03-08 06:59:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-08 06:59:01,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:59:01,900 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:59:01,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 06:59:01,900 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:59:01,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:59:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1455976091, now seen corresponding path program 1 times [2025-03-08 06:59:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:59:01,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8720965] [2025-03-08 06:59:01,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:59:01,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:59:01,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:59:01,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:59:01,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:59:01,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:59:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-08 06:59:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:59:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8720965] [2025-03-08 06:59:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8720965] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:59:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686103656] [2025-03-08 06:59:01,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:59:01,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:59:01,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:59:01,965 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:59:01,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 06:59:02,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:59:02,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:59:02,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:59:02,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:59:02,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:59:02,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:59:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 06:59:02,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:59:02,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686103656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:59:02,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:59:02,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:59:02,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985943608] [2025-03-08 06:59:02,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:59:02,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:59:02,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:59:02,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:59:02,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:59:02,099 INFO L87 Difference]: Start difference. First operand 31559 states and 41715 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:59:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:59:03,241 INFO L93 Difference]: Finished difference Result 55963 states and 73048 transitions. [2025-03-08 06:59:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:59:03,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 158 [2025-03-08 06:59:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:59:03,352 INFO L225 Difference]: With dead ends: 55963 [2025-03-08 06:59:03,352 INFO L226 Difference]: Without dead ends: 31825 [2025-03-08 06:59:03,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:59:03,403 INFO L435 NwaCegarLoop]: 4143 mSDtfsCounter, 4087 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4295 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:59:03,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 4295 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:59:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31825 states. [2025-03-08 06:59:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31825 to 31559. [2025-03-08 06:59:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31559 states, 27064 states have (on average 1.2806310966597694) internal successors, (34659), 27353 states have internal predecessors, (34659), 2445 states have call successors, (2445), 1832 states have call predecessors, (2445), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-03-08 06:59:04,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31559 states to 31559 states and 41553 transitions. [2025-03-08 06:59:05,028 INFO L78 Accepts]: Start accepts. Automaton has 31559 states and 41553 transitions. Word has length 158 [2025-03-08 06:59:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:59:05,029 INFO L471 AbstractCegarLoop]: Abstraction has 31559 states and 41553 transitions. [2025-03-08 06:59:05,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:59:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 31559 states and 41553 transitions. [2025-03-08 06:59:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-08 06:59:05,051 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:59:05,051 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:59:05,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-08 06:59:05,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 06:59:05,252 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:59:05,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:59:05,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1665934107, now seen corresponding path program 1 times [2025-03-08 06:59:05,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:59:05,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782440176] [2025-03-08 06:59:05,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:59:05,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:59:05,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:59:05,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:59:05,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:59:05,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:59:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-08 06:59:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:59:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782440176] [2025-03-08 06:59:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782440176] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:59:05,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:59:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:59:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260458785] [2025-03-08 06:59:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:59:05,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:59:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:59:05,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:59:05,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:59:05,286 INFO L87 Difference]: Start difference. First operand 31559 states and 41553 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 06:59:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:59:06,580 INFO L93 Difference]: Finished difference Result 55701 states and 72303 transitions. [2025-03-08 06:59:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:59:06,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 158 [2025-03-08 06:59:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:59:06,671 INFO L225 Difference]: With dead ends: 55701 [2025-03-08 06:59:06,671 INFO L226 Difference]: Without dead ends: 26281 [2025-03-08 06:59:06,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:59:06,705 INFO L435 NwaCegarLoop]: 4127 mSDtfsCounter, 163 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 8085 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:59:06,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 8085 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:59:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26281 states.